13.已知冰的密度ρ=O.9×10³ kg/m³,则一杯水全部结成冰,冰的体积与水的体积之比为( )A.11:10 B.10:9 C.9:10 D.1:1
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![13.已知冰的密度ρ=O.9×10³ kg/m³,则一杯水全部结成冰,冰的体积与水的体积之比为( )A.11:10 B.10:9 C.9:10 D.1:1](/uploads/image/z/2733875-35-5.jpg?t=13%EF%BC%8E%E5%B7%B2%E7%9F%A5%E5%86%B0%E7%9A%84%E5%AF%86%E5%BA%A6%CF%81%3DO%EF%BC%8E9%C3%9710%26%23179%3B+kg%EF%BC%8Fm%26%23179%3B%2C%E5%88%99%E4%B8%80%E6%9D%AF%E6%B0%B4%E5%85%A8%E9%83%A8%E7%BB%93%E6%88%90%E5%86%B0%2C%E5%86%B0%E7%9A%84%E4%BD%93%E7%A7%AF%E4%B8%8E%E6%B0%B4%E7%9A%84%E4%BD%93%E7%A7%AF%E4%B9%8B%E6%AF%94%E4%B8%BA%28+%29A.11%EF%BC%9A10+B%EF%BC%8E10%EF%BC%9A9+C%EF%BC%8E9%EF%BC%9A10+D%EF%BC%8E1%EF%BC%9A1)
13.已知冰的密度ρ=O.9×10³ kg/m³,则一杯水全部结成冰,冰的体积与水的体积之比为( )A.11:10 B.10:9 C.9:10 D.1:1
13.已知冰的密度ρ=O.9×10³ kg/m³,则一杯水全部结成冰,冰的体积与水的体积之比为( )
A.11:10 B.10:9 C.9:10 D.1:1
13.已知冰的密度ρ=O.9×10³ kg/m³,则一杯水全部结成冰,冰的体积与水的体积之比为( )A.11:10 B.10:9 C.9:10 D.1:1
质量不变,体积与密度成反比 ,所以冰的体积与水的体积之比为1000:900=10:9
B啊!!!!!!!!!!!!!!!!!!!!!!
选B
质量不变,设为m
v冰=m/p冰
v水=m/p水
p水=1.0×10³ kg/m³
代入算出即为B
由于冰融化成水时,质量不变。我们可以设质量都为m。则有V冰=m/p冰
即V冰=m/0.9;同理可得V水=m/1;由此可得V冰:V水=10:9